I think we tend to assume that what tastes good to us, tastes good to deer. I was reminded that this is not always the case a couple of years ago when I was baffled by the deer running past my well fertilized alfalfa and white clover to get to a patch of mammoth red I had planted for green manure. They hammered that red all summer, even with soybeans for miles. In the interest of science, I tasted all three forages. The alfalfa was delicious to me and I would have been happy to eat it on a salad. The white clover wasn't quite as good to me, but was still very palatable, and both it and the alfalfa were very tender, like baby greens. The mammoth red, on the other hand, was tough and almost too bitter for me to choke down. Yet, there were the deer, morning and night, chowing down on the red clover and ignoring the "good stuff" 10 feet away. This pattern changed around September, when they switched to alfalfa, and then a few weeks later, white clover. The point is, deer like what they like, regardless of what we think. All this being said, if I had trees like Chummer mentions above, I couldn't graft them fast enough, especially if they drop sometime after deer season starts. They may not be a gold mine, as soil/planting location can certainly have an effect, but I'm guessing the results would be very favorable.